You do not need to contact the seller but you must open a case for "not as described" in the resolution centre. Seller will refund or send a label for you to send the bits back if he wants.
Do not correspond or argue with the seller. Disregard any suggestions such as "Not my fault - claim from Royal Mail". If he does not repay or send the label after 3 business days escalate the case to eBay
Do not open a "not received" case. You did receive it but it was damaged
@denhan_0
